This poster introduces genulens, a public tool to simulate microlensing events using Monte Carlo simulation based on the Galactic model developed by Koshimoto, Baba & Bennett (2021). The Galactic model includes the asymmetric drift of Galactic disk stars and the dependence of velocity dispersion on Galactic location in the kinematic model, which has not been considered in most previous models used for microlensing studies. The model was developed by fitting to spatial distributions of the Gaia DR2 disk velocity, VVV proper motion, BRAVA radial velocity, OGLE-III red clump star count, and OGLE-IV star count and microlens rate, optimized for use in microlensing studies. Using genulens, you can calculate the probability distribution of microlens parameters based on the new Galactic model. This enables you to do Bayesian analysis to derive the lens parameters for individual events, to distinguish degenerate models based on the Galactic prior, and to perform statistical analysis by comparing the distribution of microlens parameters between observations and models. The poster shows several examples of its use.
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